2017 Cup of Nations (rugby union)

The 2017 Cup of Nations was the fifth Cup of Nations rugby union tournament since its creation in 2011. The tournament returned to Hong Kong, reprising its name as the Hong Kong Cup of Nations. The tournament acted as a year-ending tournament for "up and coming" tier 3 teams from different continents, providing greater preparation for teams to play in their regional competitions, especially with the 2017 participants aiming to qualify for the 2019 Rugby World Cup or to make the Rugby World Cup global repechage in November 2018.

The four competing teams were the hosts Hong Kong, two-time defending champions Russia, Chile and Kenya.

Format
The tournament was played as a single round-robin, with the winner being the team with the most table points after the third round of fixtures.